Be Quiet! TFX Power 3 300W Gold - High-Efficiency PSU for Compact Systems

The TFX Power 3 300W Gold delivers reliable, efficient power for mini and media PCs with 80 PLUS® Gold certification and full PCIe graphics card support. Designed and quality-controlled in Germany, this small form factor PSU combines high performance with whisper-quiet operation.

80 PLUS® Gold Certified Efficiency

Certified 80 PLUS® Gold with efficiency ratings up to 91.7%, the TFX Power 3 300W Gold minimizes power consumption and reduces electricity costs. At 50% load with 230V input, this PSU achieves 91.7% efficiency, while maintaining 88.9% at 20% load and 90.6% at full load. The standby power draw is less than 0.17 watts, meeting the latest energy efficiency requirements.

Dual 12V Rail Design for System Stability

The dual 12V rail configuration provides stable power distribution with the CPU receiving power through an independent rail. Two 6+2pin PCIe connectors support powerful graphics cards, making this 300W continuous power PSU ideal for compact gaming and media systems. The design ensures high stability even under demanding workloads.

Quiet Operation with Temperature-Controlled Cooling

Equipped with a high-quality temperature-controlled 80mm rifle bearing fan, the TFX Power 3 operates at just 9.7 dB(A) at 20% load, 12.4 dB(A) at 50% load, and a maximum of 21.7 dB(A) at full load. The intelligent fan control reduces noise while maintaining optimal cooling performance.

Comprehensive Connectivity

This fully wired PSU includes all necessary connectors: 1x ATX-Motherboard (20+4-pin), 1x P4 CPU connector, 2x PCI-e 6+2-pin for GPUs, 3x SATA, 2x PATA, and 1x FDD connector. Sleeved or flat black cables extend up to 60cm, providing flexible cable management in compact cases.

Protection and Reliability

Multiple protection mechanisms safeguard your system against overcurrent, over voltage, under voltage, short circuit, over temperature, and over power conditions. With an MTBF of 100,000 hours and TFX12V v2.52 & EPS 12V v2.92 compatibility, this PSU meets the latest safety standards. Active PFC ensures clean, stable power delivery with AC 100-240V input support.

Compact Dimensions

Measuring 175 x 85 x 65 mm and weighing just 1.1 kg, the TFX Power 3 fits perfectly in small form factor cases. Each unit includes mounting screws, cable ties, and a user manual, backed by a three-year manufacturer's warranty.

Description

Specification

• Form Factor: TFX
• Series: Be Quiet! TFX Power 3
• Wattage: 300 W
• Modular: Fully Wired
• Compatibility: TFX12V v2.52 & EPS 12V v2.92
• #Hide#Wattage Range: 300 - 400W
• Connectors: 1 x ATX-Motherboard (20+4-pin)
  1 x P4 (CPU)
  2 x PCI-e 6+2-pin (GPU)
  3 x SATA
  2 x PATA
  1 x FDD (Floppy)
• Rail Design: Dual12V rails
• AC Input: AC 100-240 V
• PFC: Active PFC
• Fan Type: High-quality temperature-controlled 80mm fan
• Fan Bearing: Rifle Bearing
• Noise: dB(A) at 20% load: 9.7
  dB(A) at 50% load: 12.4
  dB(A) at 100% load: 21.7
• Max Certification: Gold
• Efficiency: "80+ Gold
  230V, 20% load: 88.9%
  230V, 50% load: 91.7%
  230V, 100% load: 90.6%"
• MTBF: "100,000 hours"
• Protection: Over current
  Over voltage
  Under voltage
  Short circuit
  Over Temperature
  Over Power
• Additional Features: See Overview
• Package Contents: PSU
  Screws
  Cable ties
  User manual
• Weight/Dimensions: 1.1 kg
  Without cable (LxWxD): 175 x 85 x 65 mm
• Package Weight: 1.4300 kg
• Warranty: 3 Years